2. You can go to the following points in turn (-4, -2), (-7, -2), (-7, 7), (-3, 7), (-3, 4).

3. After the rectangles A, B, C and D are shifted to the left by two unit lengths, the coordinates of vertices A, B, C and D become (-5,2), (-5,2), (1, 2), (1, 2) respectively; After the coordinates of rectangles A, B, C and D are moved up by three unit lengths, the coordinates of vertices A, B, C and D become (-3,5), (-3, 1), (3, 1) and (3,5) respectively. Sketch.

4.C

5. Sketch. The side length of the small square in the scale diagram represents the length of 50 meters. A plane rectangular coordinate system is established with the teaching building as the origin, the east direction as the positive direction of X axis and the north direction as the positive direction of Y axis. The positions of the teaching building, library, school gate, experimental building and national flagpole are (0,0), (-50, 150), (-300,0) and (0,65438+) respectively.

6.2 class is 1 southwest of class 40? , 5km 1 level is 40 degrees northeast of level 2. , 5 kilometers away.

7. The duckling moves 2 unit lengths from A to the right, then moves up 1 unit length to B., then translates 3 unit lengths from B to C, finally translates 2 unit lengths from C to the right, and then translates 1 unit length to D..

8.A 1(3，6)，B 1( 1，2)，C 1(7，3)

9. The area of triangle ABC is 10.

10.A'(2，0)，B'(5，0)，C'(5，)，D'(2，)

1 1.N(x，y)

12. sketch.